Signal.



No. 700,041. Patented May l3, I902.

W. H. HARTLINE.

SIGNAL (Application med Dec. 12, 1901.

(No Model.)

W IYLVESSES:

UNITED STATES PATENT QFFICE.

. \VILLIAM H. IIARTIJINE, OF TAMAQUA, PENNSYLVANIA.

SIGNAL.

SIECIFICATION forming part of Letters Patent No. 700,041, dated May 13,1902.

Application filed December 12, 1901. Serial No. 85,626. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. HARTLINE, a citizen of the United Statesof America, residing at Tamaqua, in the county of'Schuylkill and Stateof Pennsylvania, have invented certain new and useful Improvements inSig nals, of which the following is aspecificationq of the alarm whenthe engineer is on guard and is aware of the condition of the signal,

such means comprising a hand-controlled Valve which closes thefluid-pipe on which the signal is mounted.

Furthermore, the object of the invention'is to produce a signal and itsoperating mechanism which can be actuated by a person at the side of-themoving engine,and, fin'ally,'the object is to produce a device ofthecharacter noted which will possess advantages in points ofsimplicity, durability, and efficiency,pro ving at the same timecomparatively inexpensive to produce and sustain.

With the foregoing and other objects in view the invention consists inthe details of construction and in the arrangement and com,- bination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference willbe had to theaccompanying drawings, forming part of this specification, wherein likecharacters denote corresponding parts in the several'views, and inwhich- Figure 1 is a view-in elevation of an engine with the inventionapplied. Fig. 2 is aview in detail of the alarm and its connection. Fig.3 is a view ofthe semaphore and trip. 4 Fig. 4 is an enlarged detail ofa fragment thereof.

In the drawings, 1 indicates the railroad-, track; 2, a semaphore-post;3, a semaphorearm suitably pivoted and having a connection 4, by whichit. is swung into a practically horizontal position through the mediumof the bell-crank lever 5, operated by a pull on a wire 6 or the likeconnection strung to a watchmans tower.

A block 7, with a cam-surface S,'is slidable on the plates 9, secured tocross-ties 10. The block has a yoke 11, to which is connected a link 12,said link being pivoted to the bellcrank lever 5. The parts are in suchposition that normally the block 7 is stationed a distance from therail; but when the semaphore-arm is elevated said block is moved closerto the rail in order that the signal-cone trolling lever may beactuatedthrough its contact with the block, thus warning the engineer that thedanger-signal is set against him.

When the semaphore-arm is released, it falls by gravity, and thebell-crank lever will assume its normal position and draw the block 7fron1 the rail.

The signal-controlling lever 13 is pivoted at the front, in order thatobstructions may actuate the lever when the front of the engine hasreached them, that the engineer may havea warning. A rod 15 is pivotedto the upper end of the lever 13 and extends rearwardly to the cab. Thelength of the rod maybe varied by the turnbuckle 16, or said rod may besolid and made the desired length 'to suit'the particular engine forwhich it is designed.

A SlIlOIll pipe l7-is tapped onto the trainpipe' 18 'of -the air-brakesystem just under the engineers valve. The pipe 17 has a valve 19, whichis under the control and in reach of the engineer. A second valve 20 isinterposed in the pipe, and the rod 15 is pivoted to thehandle of thevalve, the parts being so positioned that as the lever 13 contacts withthe block or other obstruction the rod will be moved longitudinallytoward the front of the engine, therebypartially rotatingthe valveplugand permitting air from the'train-pipe to escape through the pipe 17 toa whistle 21 on the end of said pipe.'- iWhen the engineer is aware ofthe danger-signal being set against him and does not want the alarm tosound, the valve 19 is closed, thus preventing theair from reaching thelever-operated valve or the whistle.

If desired, a series of blocks may be connected by wires to work inunison with the at 14 to the frame of a locomotive, preferably operationof a semaphore-arm. It will also be noted that other connections may bemade for actuating or moving the initial block.

The construction, operation, and advantages will, it is thought, beunderstood from the foregoing description, it being noted that changesin the proportion and details of construction may be resorted to forsuccessfully carrying the invention into practice without departing fromthe scope thereof.

Having fully described the invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a signal, a semaphore-post and its arm, a bell-crank pivoted to thepost near the bottom, a cam-block slidable with relation to one of therails of a railway-track, a yoke secured to the block, a link connectedto the yoke and pivotally connected to the bellcrank, means whereby thebell-crank operates to lift the semaphore-arm and move the block closeto the rail, a tripping-lever carried by the engine operated bycontacting with the cam'-block,a pipe tapped in the trainpipe of anair-brake system, a whistle on the pipe, a valve in the pipe and aconnection from the tripping-lever to the valve whereby said valve isopened when the lever is tripped as and for the purpose described.

In testimony whereof I affix my signature, in the presence of twowitnesses, this 11th day of December, 1901.

XVILLIAM H. IIARTLINE.

Witnesses:

WALTER P. PLUMLEY, FRANK S. APPLEMAN.

